Tutorial on how to build a time-series of NDVI for a particular region of interest in Google Earth Engine. Assoc. Prof. Shaun R Levick www.geospatial...
Thank you this training was super helpful. I had some trouble with filtering the dates at first, however, found that GEE must have changed the format. But super easy fix. Thanks!!
@@vandanachoudhary7348 I can't recall why this wasn't working for me. But as a workaround I have been using the following method for the past year and is working well for me (copy and paste below). Let me know if this works for you . Make sure to substitute in the path to the image collection he is using here // Import image collection var data = ee.ImageCollection('path/to/image/collection') .filter(ee.Filter.date('2000-01-01', '2021-07-01'))
Hi, I'm trying to get a time series of NDVI from MODIS/061/MOD13Q1 and the NDVI value I get is from 5500 to 7000. is it correct?because in the video, your ndvi value is between -1 to 1.
thank you for the info! one question: since we calculte ndvi over time, it it the change in ndvi for each cell that is displayed on the map, or is it one of the values?
could someone clarify something for me? is the ndvi on the y axis of the timeseries a mean taken of the all ndvi within the polygon? please and thank you
might work for the previous version (read only): docplayer.net/50129516-Google-earth-engine-modis-normalized-difference-vegetation-index-ndvi-training-release-iri-earth-institute-columbia-university.html
